fortress -4013 defenced , fenced , {fortress} , fortresses , 
hold , holds , strong ,   

fortress -4581 forces , fort , {fortress} , hold , holds , most ,
 rock , strength , strengthen , strong ,   

fortress -4686 castle , defence , fort , {fortress} , hold , 
holds , hunted , net , snare , strong ,   

fortress -4693 besieged , {fortress} ,   

fortresses -4013 defenced , fenced , fortress , {fortresses} , 
hold , holds , strong ,